202215342409 has 2 divisors, whose sum is σ = 202215342410. Its totient is φ = 202215342408.

The previous prime is 202215342377. The next prime is 202215342419. The reversal of 202215342409 is 904243512202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201486072384 + 729270025 = 448872^2 + 27005^2 .

It is a cyclic number.

It is not a de Polignac number, because 202215342409 - 2⁵ = 202215342377 is a prime.

It is a super-2 number, since 2×202215342409² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202215342419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101107671204 + 101107671205.

It is an arithmetic number, because the mean of its divisors is an integer number (101107671205).

Almost surely, 2^202215342409 is an apocalyptic number.

It is an amenable number.

202215342409 is a deficient number, since it is larger than the sum of its proper divisors (1).

202215342409 is an equidigital number, since it uses as much as digits as its factorization.

202215342409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 202215342409 in words is "two hundred two billion, two hundred fifteen million, three hundred forty-two thousand, four hundred nine".